What's the recommended way nowadays to activate LaTeX-mode automatically upon opening a tex file? I would have thought that
(use-package tex :ensure auctex :mode ("\\.tex\\'" . LaTeX-mode)) which adds the appropriate entry to auto-mode-alist, would suffice, but it doesn't with the latest Emacs and AUCTeX masters. The issue is that an autoload in tex-mode.el adds the entry (latex-mode . LaTeX-mode) to major-mode-remap-alist, but AUCTeX doesn't seem to remove that entry. There's some relevant code in the function TeX-modes-set in tex-site.el, but I wasn't able to figure out when that code is called. My workaround has been (add-hook 'latex-mode #'LaTeX-mode), but I was curious if something else is intended.